Embossing machine



May 18 1926. 1,585,354

C. c. ZABRISKIE EMBOSSING MACHINE Filed Nov. 6, 1922 Patented May 18, 1926.

P TENT FF.

CHARLES C. ZABRXSKIE, OF DETROIT, MICHGAN, A SSGNOR TO THE SUPERIOR SEAL :E: STAM? COMPANY, OF DETROT, MICHGAN, Il. CRLBGRATION OF MCHIGAN.

EMBOSSENG MACHINE.

Application led November rlhe invention relates to embossing machines and more particularly to that type designed tor operation upon theV walls ot .arrow necked containers, such, tor instance, :xs milk cans. It is the Object ot the invention to provide a construction which fis adapted t perform the embossing operation quickly and eiiiciently and which requires a minimum ot time for engagement and dis- Y- engagement. To this end the invention consists in the construction as hereinafter set forth.

ln the drawings:

Figure l is a side elevation ci the machine in position for engagement ot the work;

Fig. 2 is a similar view oi" the embossing dies in position where the work is being performed 5 Figs. 3 and Ai are end elevations ot the dies respectively in the positions ot Figs.

nd 3. ln the embossing ot the walls of sheet metal containers, such as milk cans, it is necessary to arrange the male and female dies respectively upon the outside and inside ot the work and to apply the necessary pressure for the drawing ot the metal. llt is the usual practice to form these dies on the periphery ot circular rolls, which in turn are mounted upon spindles or arbors revolubly supported` in a trame. lllhere the container to be embossed has a comparatively narrow neck, as, tor instance, a milk can, the circular die must be restricted in diameter so to enter this neck. rit the same time, it is essential that the periphery ot the die should be brought 'into full con- "act with the inner wall ot' the can. There -tore9 it the torni of the die is cylindrical, it is only possible to form the work on articles in which the difference between the radius ot the neck and oi' the body is no greater than the ditlerence in the radius ot the die and its spindle.

rllo adapt my machine for successful operation on articles having a greater differs ence between the size ot the neck and body, l have substituted for the cylindrical dies conical dies, which are reversely arranged on the inner and outer spindles. These will permit ot arranging the portion of the can to be embossed in oblique relation to the axes ot the spindles and thereby to avoid interference between the neck portion ot the can and the spindles. However, to engage the can with the dies, a considerable clearance between the rolls is required tor passing around the various bends between the neck and the body. lt such clearance is obtained by movement of one of the spindles towards or from the other, this will introduce coniplexity in the construction and will also interfere with the rigidity ot the structure during the performance ot the work. I have avoided this dii'iiculty by cutting away segments ot the periphery ot the dies, thereby providing the required clearance without any relative movement ot the spindles. This produces an exceedingly simple and rigid construction which is capable ot rapid operation with satistactory results.

In detail, fr is a trame upon which are mounted the parallel spindles B and C, these being journaled in suitable bearings l) in the upwardly extending trame members E and F. G and G are intermeshing gear wheels mounted en the respective spindles and which accurately time tie rotation of said spindles in relation to each other. is a driving mechanism for one ot the spindles which is provided with any suitable, construction .ot trip mechanism (not shown), effecting one complete revolution oic each spindle each time the machine is operated.

The spindles B and C entend outward beyond the trame member E a considerable distance and the die members l and J are mounted at their outer ends. These dies are oic truste-conical form, being reversely ranged upon the spindles so to be para .i to each other at the point oi'- tangency. These tangent portions are also at an angle to the axes ot the spindles such that the narrow neck et the can will clear the spindlA oi the inner die member.

Usually milk cans are formed with liar-ing mouths, a narrow cylindrical neck and an obliquely expanding portion extending from the neck to the cylindrical body, These changes in direction would cause interference in introducing or extracting the work it the clearance provided between the dies was merely that required tor the introduction of straight work. Tl'ieret'ore, the usual adjustments which are provideL in embossing machines 'tor moving the dies towards or from each other would be insutlicient to adapt this machine to the work which it is designed to perform. I have,

l (lo however, provided abundant clearance by cutting away segments of each die, as indicated at li and K, Which cut-away portions are opposte each other in the normal stationary position ot the dies.

TWith the construction as described, the clearance between the portions K and l will permit oi quickly engaging the can or similar article so as to register" the portion ol3 the wall to be embossed with the dies. rl`he machine is then tripped, which will cause one complete revolution of each of the' dies, iirst bringing the embossed portions in contact with. the outer and inner surfaces of the can and then rolling to complete the embossing operation. Finally the machine is stopped in its original position Where the cut-away portions l and K permit of disengagement oi' the completed ivorl: and the re-engagement of a new blank.

What I claim asmy invention is l. In an embossing machine,the combination of parallelly arranged rotary spindles, means for imparting to said spindles simultaneous and corresponding angular movements, and embossing dies co-actingly mounted on said spindles, having peripheral Work engaging faces extending obliquely to the axes ot rotation throughout substantially the full Width of said faces, said faces being parallel along their lines ot tangency to the Work, said dies having cutaway portions ot a radius less than that of any portion ot' said Work engaging faces, said portions opposing each other in one angular position of said spindles and being spaced apart in said position so as to afford a relatively large clearance `for introduction and Withdrawal of Work.

2. ln an embossing machine, the combination ot parallelly spaced rotary spindles, journal bearings for said spindles ait'ording rigid support therefor and arranged to leave outwardly projecting portions with an nnobstructed space therebetween, coinplemen` tary dies mounted on the outer ends ot said spindles and provided with peripheral segments having surfaces Which aie oblique to the axes of rotation and parallel to each other along the line or" tangency, said diesy also having portions of their periphcrics cutaway', and means for periodically rotat ing` said spindles simultaneously and cor respon'dingly through predetermined angular movements thereby bringing the cut-- avvay portions ot' said dies adjacent each other to permit introduction and withdrawal ot rthe Work.

3, In an embossing machine, the combination Wit-h parallclly arranged spacer ro tary spindles, oi" a pair ot complementary embossing dies mounted on said spindlesr said dies having their peripheral ivorl; engaging faces inclined through'iiut substantially the entire Width ot said laces to a `frustro-conical form, said faces being parallel along the lines ot their tangency to the Work, said dies having cut-away peripheral portions reduced to a lesser radius than` any portion ot said trustro-conical surfaces, said portions being opposed in one position of rotation et said spindles, and being spaced apart in said position to ator'd a' relatively large clearance for the iutroduction and removal ot' Work.

In testimony Whereoitl l aiiix my signature.,

CHARLES C. ZABRlSKIE. 

